photodissociation to H 2 and CO following excitation to the 2 1 4 1 and 2 1 4 3 transitions in
S 1. The CO velocity distributions were obtained using dc slice imaging of single CO
rotational states ( v= 0, j CO= 5–45). These high-resolution measurements reveal the
correlated internal state distribution in the H 2 cofragments. The results show that rotationally
hot CO (j CO∼ 45) is produced in conjunction with vibrationally “cold” H 2 fragments (v= 0 …